protected ValidatableViewModel(IErrorsContainer <ValidationError> errorsContainer, ArrayFormat errorFormat = ArrayFormat.First)
{
ErrorsContainer = errorsContainer;
ErrorsContainer.ErrorsChanged += OnErrorsChanged;
dataErrorInfoProvider = new DataErrorInfoProvider(ErrorsContainer, errorFormat, ObjectErrorPropertyName);
}
protected ValidatableViewModel(IMessenger messenger, ArrayFormat errorFormat = ArrayFormat.First)
: base(messenger)
{
ErrorsContainer = new ErrorsContainer();
ErrorsContainer.ErrorsChanged += OnErrorsChanged;
dataErrorInfoProvider = new DataErrorInfoProvider(ErrorsContainer, errorFormat, ObjectErrorPropertyName);
}
private void Initialize()
{
ErrorsContainer = new ErrorsContainer();
ErrorsContainer.ErrorsChanged += OnErrorsChanged;
dataErrorInfoProvider = new DataErrorInfoProvider(ErrorsContainer);
validationOnPropertyChangedEnabled = true;
}
public void OnPropertyValidatedRecordsErrorIfPropertyImplementsIDataErrorInfoAndIsInvalid() {
// Arrange
DataErrorInfoProvider model = new DataErrorInfoProvider();
model.Errors["readwriteproperty"] = "Some error message.";
ModelBindingContext bindingContext = new ModelBindingContext() {
Model = model,
ModelName = "theModel"
};
PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(MyModel))["ReadWriteProperty"];
DefaultModelBinderHelper helper = new DefaultModelBinderHelper();
// Act
helper.PublicOnPropertyValidated(null, bindingContext, property, 42);
// Assert
Assert.AreEqual("Some error message.", bindingContext.ModelState["themodel.readwriteproperty"].Errors[0].ErrorMessage);
}
public void OnPropertyValidatedDoesNothingIfPropertyImplementsIDataErrorInfoAndIsValid() {
// Arrange
DataErrorInfoProvider model = new DataErrorInfoProvider();
ModelBindingContext bindingContext = new ModelBindingContext() {
Model = model,
ModelName = "theModel"
};
PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(MyModel))["ReadWriteProperty"];
DefaultModelBinderHelper helper = new DefaultModelBinderHelper();
// Act
helper.PublicOnPropertyValidated(null, bindingContext, property, 42);
// Assert
Assert.IsTrue(bindingContext.ModelState.IsValidField("themodel.readwriteproperty"), "ModelState should not have been changed.");
}
public void OnModelUpdatedRecordsErrorIfModelImplementsIDataErrorInfoAndIsInvalid() {
// Arrange
DataErrorInfoProvider model = new DataErrorInfoProvider() { ErrorText = "Some error message." };
ModelBindingContext bindingContext = new ModelBindingContext() {
Model = model,
ModelName = "theModel"
};
DefaultModelBinderHelper helper = new DefaultModelBinderHelper();
// Act
helper.PublicOnModelUpdated(null, bindingContext);
// Assert
Assert.AreEqual("Some error message.", bindingContext.ModelState["themodel"].Errors[0].ErrorMessage);
}
public void OnModelUpdatedDoesNothingIfModelImplementsIDataErrorInfoAndIsValid() {
// Arrange
DataErrorInfoProvider model = new DataErrorInfoProvider();
ModelBindingContext bindingContext = new ModelBindingContext() {
Model = model,
ModelName = "theModel"
};
DefaultModelBinderHelper helper = new DefaultModelBinderHelper();
// Act
helper.PublicOnModelUpdated(null, bindingContext);
// Assert
Assert.IsTrue(bindingContext.ModelState.IsValidField("themodel"), "ModelState should not have been changed.");
}